Insulator pin



, Mn. 3. 1925. v

' 1,528,580 A. J. STAUB INSULATOR PIN Filed Agg. l, 1925 ATTORNEY Patented Mar. 3, 1925.

UN IT E D S TA TE S ARTHUR J. STAUB, OF FORT WAYNE, INDIANA.

INSULATOR PIN.

Application fil'ed August 1, 1923.

To all whom it may concern:

Be it known that I, ARTHUR J. STAUB, a citizen of the United States of America, and resident of Fort lVayne, in the county of Allen and State of Indiana, have invented certain new and useful Improvements in Insulator Pins, of which the following is a specification.

This invention relates to improvements in insulator pins and the object thereof is to provide a pin for electric wire insulators so constructed as to serve as a support for an insulator on a cross-arm and which will be held in locked connection with the cross arm when the insulator is screwed into position on the top of the pin. Another object is to provide an insulator pin so constructed that when mounted in connection with a cross-arm it will admit of the passage of a wire up through the pin opening in the cross-arm and through the pin to be sheltered thereby from becoming an obstruction.

These objects are accomplished by the construction illustrated in the accompanying drawing, which is an elevation of a construction embodying the invention, there being parts shown in section.

The characters appearing in the description refer to parts shown in the drawing and designated thereon by corresponding characters.

The invention consists of a pin composed of two parts 1 and 2 respectively, each of which has a pendant leg 3 with an outturned foot 4 at its lower extremity and an outwardly extending shoulder 5 at the top of the leg. Each part has also an upwardly extending arm 6, its upper portion having external threads 7 thereon that engage in the internally threaded insulator 8 when the latter is positioned on the pin.

On the part 1, projecting from the inner face thereof near the lower end of its arm, are a pair of lugs 9 that bear in a corresponding pair of recesses 10 made in the inner face of the part 2 and form a fulcrum bearing for the two parts. The lugs 9 are of such length that the two parts are held spaced apart, and their ends are shaped so as to admit of relative pivotal movement of the parts.

In utilizing the invention the pin is applied to an ordinary cross-arm 11 by inserting the legs down through the pin opening 2 therein, while the legs are held sutficiently known in the usual Serial No. 655,067.

close to each other as to admit of the passage of the feet through the opening. The; arms Gare then moved upon the fulcrum bearing toward each other causing the legs to part and the feet to project laterally beneath the bottom of the cross-arm adjacent the opening and with the shoulders 5 resting upon the top of the cross-arm about the opening. \Vhile the parts are thus positioned the insulator is applied to the top of the pin as in the ordinary construction, the insulator serving to hold the arms from spreading as well as receiving support therefrom. By this construction the pin has locked conncction with the cross-arm.\

As the arms and legs as well as the lugs are spaced apart when the pin is in position, a tap-wire 18 may be extended up through the pin opening in the cross-arm and between the legs and arms and 0011- nected with the line wire (not shown) for which the insulator forms a support, and thus the tap-wire is held out of the way of the workmen and liability of derangement.

The pin is preferably made of metal by any suitable method of manufacture, such as by casting or forging the parts, or, the parts may be designed as to admit of their manufacture from sheet metal by the use of blanking and forming dies of the type practice.

What I claim is 1. In a pin for mounting an insulator in connection with a. cross-arm, a pin comprised of two parts spaced apart, one of said parts having a pair of lugs extending from its inner side approximately midway between its ends, and the other part having in its inner side a corresponding recess for the reception of said lugs, the upper portion of each part having external threads for the insulator and the lower end of each part having an outwardly extending foot that has locking engagement with the crossarm when the upper portions of said parts are confined within the insulator, each part having also an external shoulder at the j uncture of its upper and lower portions.

2. In a pin for mounting an insulator in connection with a cross-arm, a pin com,- prised of two parts having a fulcrum bearing approximately midway between their ends and being held spaced apart above and below the bearing, each part having an upwardly extending arm and a depend liling leg, there being an outwardly extending shoulder at the juncture of the arm and leg, and an outwardly extending foot at the bottom 01'' the leg, the upper portion of each part having external threads thereon for engagement with the internal threads of an insulator, the legs of said parts being expanded into locked engagement in the pin hole of the cross-arm when the arms are confined in the insulator.

3. In a device for mounting an insulator in connection with a cross-arm, a two part pin, its upper and lower portions being spaced apart and having a fulcrum bearing between its parts approximately midway between its ends, the lower portion of the pin being expanded into locked engagement in the pin opening of the cross-arm When the upper end of the pin is confined in the insulator.

In testimony whereof I aflix my signature in presence of two witnesses.

ARTHUR J. STAUB Witnesses:

MATILDA ME'rTmR, lVALTER G. BURNS. 

